dateutils.dsort: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dateutils.dsort - from package: dateutils

You may install the required package with command apt-get install {package}
Error in other languages:
dateutils.dsort: bevel nie gevind nie
dateutils.dsort: comandă negăsită
dateutils.dsort: comando não encontrado
dateutils.dsort: commande introuvable
dateutils.dsort: command not found
dateutils.dsort: käsku ei ole
dateutils.dsort: không tìm thấy lệnh
dateutils.dsort: komanda nerasta
dateutils.dsort: Kommando nicht gefunden.
dateutils.dsort: kommandot finns inte
dateutils.dsort: komut yok
dateutils.dsort: nie znaleziono polecenia
dateutils.dsort: níor aimsíodh an t-ordú
dateutils.dsort: no se encontró la orden
dateutils.dsort: no s'ha trobat l'ordre
dateutils.dsort: opdracht niet gevonden
dateutils.dsort: parancs nem található
dateutils.dsort: perintah tidak ditemukan
dateutils.dsort: príkaz nenájdený
dateutils.dsort: příkaz nenalezen
dateutils.dsort: команда не найдена
dateutils.dsort: командата не е открита
dateutils.dsort: 命令找不到
dateutils.dsort: コマンドが見つかりません